MESON Chess Problem Database

Problem Display
PID: 267860 (4N3/8/4Q2K/7n/5k2/8/4PB2/8 w - - 0 1)

Milenkovic, Stanko

Politika, 1963

4N3/8/4Q2K/7n/5k2/8/4PB2/8

#2

5 + 2

261 Mat 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Be3#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Qf5#
      • 1...Sg3
        • 2.Be3#
      • 1...Sg7!
    • 1.Sf6?
      • threat
        • 2.Sd5#
        • 2.Sxh5#
        • 2.Qe4#
      • 1...Sg3
        • 2.Sd5#
        • 2.Be3#
      • 1...Sg7
        • 2.Sd5#
        • 2.Qe4#
      • 1...Sxf6!
    • 1.Sg7?
      • threat
        • 2.Sxh5#
        • 2.Qf5#
      • 1...Sg3
        • 2.Be3#
      • 1...Sf6
        • 2.Qf5#
      • 1...Sxg7!
    • 1.Bg1?
      • 1...Sg7
        • 2.Bh2#
      • 1...Sg3
        • 2.Be3#
      • 1...Sf6
        • 2.Bh2#
      • 1...Kg3!
    • 1.Qe3+?
      • 1...Kg4
        • 2.Qf3#
      • 1...Kf5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qf5#
        • 2.Qe4#
      • 1...Sg3
        • 2.Be3#
      • 1...Sf6
        • 2.Qf5#
      • 1...Sg7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::B(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR1(C)
      • Vars
        • S(b);SBLOCK::B(B)
      • Refutation
        • S(b);
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Refutation
        • S(b);XS(E)
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);SBLOCK::B(B)
        • S(b);::QAR1(C)
      • Refutation
        • S(b);XS(E)
    • Try
      • B(B);
      • Vars
        • S(b);N_GUARD::B(B)
        • S(b);SBLOCK::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • S(b);SBLOCK::B(B)
      • S(b);::QAR1(C)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).